Properties of pectin extracted from flesh of Asian pear in 3 cultivars were investigated at different growth stages. The extraction yields of pectin by the acidic treatment decreased during the growth. The L* value of young fruit was lower than unripe and ripe fruit, and a* and b* value were higher in the same cultivars. The degree of esterification(DE) and intrinsic viscosity of pectin were 21.1-41.3% and 1.90-3.81 dL/g, respectively. The pectin extracted from flesh of pear showed about 30% glucose retarding effect. The DE value had a high correlation with retarding effect on glucose transport and intrinsic viscosity (p<0.01 and p<0.05). The intrinsic viscosity of the pectin seems to affect the retardation of glucose transport in blood. Pectin extracted from flesh of Asian pear by acidic treatment could be a good source to develop low calorie and functional food.